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FWA CHIP CONFIGURATIONS FOR A MID-VOLUME COLOR SCANNER

IP.com Disclosure Number: IPCOM000026375D
Original Publication Date: 1991-Aug-31
Included in the Prior Art Database: 2004-Apr-05
Document File: 4 page(s) / 137K

Publishing Venue

Xerox Disclosure Journal

Abstract

High resolution color sensors are necessary to meet the demands of electronic color copying. Proposed are two configurations of full color sensor chips containing several sensor elements which can be butted together and mounted on a substrate creating a full color Full Width Array (FWA).

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XEROX DISCLOSURE JOURNAL

FWA CHIP CONFIGURATIONS FOR A MID-VOLUME COLOR SCANNER Jagdish C. Tandon
Pierre A. Lavallee
Mehdi N. Araghi
Joseph J. Daniele
Joseph P. Taillie 18

Proposed Classification
U.S. C1.3581075 Int. C1. H04n 01/46

'q

0

22

REGION TRANSFER 2/

AMPLIFIERS & SHIFT REGISTERS

RED

I

1

FIG. 1

XEROX DISCLOSURE JOURNAL - Vol. 16, No. 4 July/August 1991 259

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FWA CHIP CONFIGURATIONS FOR A MID-VOLUME COLOR SCANNER(Cont'd)

18

24

/

TRANSFER REGION

AMPLIFIERS & SHIFT REGISTERS

FIG. 2

260 XEROX DISCLOSURE JOURNAL - VO~. 16, NO. 4 July/August 1991

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Page 3 of 4

FWA CHIP CONFIGURATIONS FOR A MID-VOLUME COLOR SCANNER(Cont'd)

High resolution color sensors are necessary to meet the demands of electronic color copying. Proposed are two configurations of full color sensor chips containing several sensor elements which can be butted together and mounted on a substrate creating a full color Full Width Array (FWA).

Figure 1 shows the circuit elements necessary to obtain full color information for one pixel. The configuration shows blue sensor 12, red sensor 14 and white or green sensor 16. The three sensors 12, 14, 16 are alternately connected to amplifiers and shift registers 26 through transfer region 24. In this configuration, the area of each pixel has been adjusted to compensate for sensor spectral effects and to allow layout space for signal lines such as fat zero injection lines 18,20,22. Off-chip memory is required to time synchronize the three rows of sensors to provide three color information for one pixel.

Figure 2 shows a variant to the configuration in Figure 1. The eleme...